LCL advantage:

Cheap: As you only need to pay the volume you need for your goods, instead of paying a whole container freight;

Steady: LCL freight cost is nearly Fixed, not fluctuate much like FCL. And you will be much easier to book the space especially under peak season when shipping line space nearly full.

LCL disadvantage:

Time: LCL takes extra more time on stuffing and unstuffing the container, especially when your destination no direct service, the goods may need transfering devanning and reloading at a 3rd country, which may need extra waiting time ;

Risks: As LCL goods will be mix loaded with different cargo in same container, that will increase the damage risks. So for LCL goods, always need more attention on your packing protection.